Unmanned aerial vehicle



FIG. 1 is a perspective view of an unmanned aerial vehicle showing the design;

FIG. 2 is a front elevation view of the design;

FIG. 3 is a rear elevation view of the design;

FIG. 4 is a left-side elevation view of the design

FIG. 5 is a right-side elevation view of the design;

FIG. 6 is a top plan view of the design; and,

FIG. 7 is a bottom plan view of the design. 

CLAIM The ornamental design for an unmanned aerial vehicle, as shown and described. 